﻿<p>The <em>IfcControllerTypeEnum</em> defines the range of different types of controller that can be specified.</p>

<blockquote class="history">
HISTORY&nbsp; New enumeration in IFC2.0.
</blockquote>

<blockquote class="change-ifc2x4">
IFC4 CHANGE&nbsp; PROPORTIONALINTEGRAL and PROPORTIONALINTEGRALDERIVATIVE values deleted (property set enumeration now used).  MULTIPOSITION added.
</blockquote>